Environment
Mary E Post Elementary School — Environment & Air Quality
Air quality, drinking-water safety and environmental hazards within 1–5 miles of Mary E Post Elementary School in YUMA, Arizona.
Latest Air Quality Index
44
Good · monitor 3.2 km away
PM2.5 annual7.9 µg/m³
Water health violations 10yr92
TRI sites within 1 mi2
Air Quality
EPA AirNow + AQS · 2024
44
AQI latest — Good
44
AQI 7-day avg
3
Days unhealthy in last 90
7.9
PM2.5 annual µg/m³ (EPA NAAQS limit: 9.0)
50.3
Ozone annual ppb
Public Water System
CITY OF YUMA · PWS AZ0414024
92
Health-based violations (10yr)
84
Acute violations (10yr)
103,264
Population served
27
Most recent violation type
2025-06-01
Nearby Environmental Hazards
EPA Superfund (NPL), TRI release sites, brownfields (2024)
2
TRI sites within 1 mile
10
TRI sites within 5 miles
4.8 mi
Nearest Superfund (NPL)
YUMA MARINE CORPS AIR STATION
0.4 mi
Nearest brownfield
UNION PACIFIC RAILROAD
Sources: school_air_quality + school_air_quality_daily (EPA AQS / AirNow), school_water_safety (EPA SDWIS), school_env_hazards (EPA NPL / TRI / Brownfields).